The new controller from Sensor Electronics monitors some 100 toxic, flammable gases, and shows precise PPM and LEL readings on a digital screen. LEDs below the screen change from green to red as gas concentrations approach danger levels. The controller can be a safe 3000 feet from the sensor, eliminating personnel exposure to possible asphyxiation and explosion. - Minneapolis - (800) 285-3651 - E-mail sensor@minn.net